Camshaft, Removing And Installing, Engine With Guide Rail Version 1: Removing

WARNING: This page is about a different car, the 2018 Audi Q3 Quattro, 2018 Audi Q3, 2017 Audi Q3 Quattro, and 2017 Audi Q3. However, it is still accessible from the selected car via links, so may be relevant.

The cylinder head cover sealing surfaces on the cylinder head must not be worked on.
The camshaft bearings are integrated in the cylinder head or cylinder head cover. Before removing the cylinder head cover the tension from the camshaft timing chain must be released.
During installation, all cable ties must be installed at the same location.

Preliminary work may be required depending on the model. Refer to OVERVIEW - VALVETRAIN, ENGINE WITH TWO CAMSHAFT ADJUSTERS or OVERVIEW - VALVETRAIN, ENGINE WITH ONE CAMSHAFT ADJUSTER .

-- Remove the upper timing chain cover. Refer to TIMING CHAIN COVER, REMOVING AND INSTALLING, ENGINE WITH TWO CAMSHAFT ADJUSTERS .

-- Remove the high pressure pump. Refer to HIGH PRESSURE PUMP, REMOVING AND INSTALLING .

-- Remove the vacuum pump. Refer to VACUUM SYSTEM .

-- Remove the engine support (Cylinder Block, Belt Pulley Side).

-- Turn the vibration damper in "TDC".

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The markings -1- on the camshaft chain sprockets must be opposite the markings -2- and -3-.
The notch on the vibration damper and the marking on the lower timing chain cover -arrow- must be align.

TIP:

The combination of the : T40263 , : T40314 and 24 mm socket are better suited than the : T10355 for positioning the vibration damper.

-- Remove the lower timing chain cover. Refer to LOWER TIMING CHAIN COVER, REPLACING .

Pay attention to the direction of rotation: the control valves have left-hand threads - risk of damaging the threads.

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-- Remove the left and right control valve in direction of -arrow-.

Depending on the version of the control valve use one of the tools listed:

: T10352B
: T10352/1A
: T10352/2
: T10352/3
: T10352/4

-- To do so counterhold the crankshaft on the vibration damper with the : T40263 , : T40314 and the 24 mm socket.

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-- Remove the bolts -arrows-.

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Carefully remove the bearing mount, without tilting.

-- Remove the bearing mount.

-- Remove the bolts -arrows-.

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-- Remove the bolt -arrow-.

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-- Install the : T40243 -arrows-.

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-- Press the chain tensioner circlip -1- together and hold it.

-- Slowly press and hold the : T40243 in direction of -arrow-.

-- Secure the chain tensioner with the : T40267 .

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-- Remove the : T40243 .

-- Bolt the : T40271/2 to the cylinder head and slide into the splines on the chain sprocket in direction of -arrow 2-. Rotate the intake camshaft with the : T40266 -1- if necessary.

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-- Install the : T40271/1 on the cylinder head.

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The help of a second technician is necessary for the following step.

-- Hold the exhaust camshaft with the : T40266 in direction of -arrow A-. Remove the bolt -1- and guide the tensioning rail -2- downward. Turn the camshaft further clockwise in direction of -arrow A- until the : T40271/1 can slide into the chain sprocket splines in direction of -arrow B-.

-- Check the installation position -C- of the : T40271/1 .

-- Remove the guide rail -1- by unlocking the latch -arrow- with a screwdriver and pushing the guide rail forward.

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-- Press the oil pump chain tensioner bracket in direction of -arrow- and lock with : T40011 .

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-- Remove the bolt -1- and remove the chain tensioner.

-- Remove the bolts -1- and remove the guide rail -2-.

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-- Remove the camshaft timing chain from the camshaft sprockets and guide downward.

-- Install the : T10531/3 . The flat area -1- points upward toward the cylinder head when in the "TDC point". Install the : T10531/4 . Turn the crankshaft with a 32 mm open end wrench counter-clockwise out of "TDC".

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-- Use the : T40266 to turn the intake camshaft in direction of -arrow 1-, slide out the : T40271/2 from the chain sprocket splines -2- and bring the camshaft into the rest position.

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-- Use the : T40266 to turn the exhaust camshaft in direction of -arrow 1-, slide out the : T40271/1 from the chain sprocket splines -2- and bring the camshaft into the rest position.

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-- Remove the cylinder head cover bolts in -1 to 6- sequence.

Fig 1: Cylinder Head Cover Bolt Loosening Sequence

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-- Pry up the cylinder head cover -2- using a tool for example a screwdriver -1- starting at the chain side.

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-- Remove the cylinder head cover.

-- Remove the camshaft and cover the open engine components.

-- If necessary for continuing work: mark the roller rocker lever and hydraulic lifter for reinstallation, remove them and place on a clean surface.